<template>
  <div class="app-container">
    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="courseQuery.title" placeholder="课程名称"/>
      </el-form-item>

      <el-form-item>
        <el-select v-model="courseQuery.status" clearable placeholder="课程状态">
          <el-option value="Normal" label="已发布"/>
          <el-option value="Draft" label="未发布"/>
        </el-select>
      </el-form-item>

      <el-form-item label="添加时间">
        <el-date-picker
          v-model="courseQuery.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>

      <el-form-item>
        <el-date-picker
          v-model="courseQuery.end"
          type="datetime"
          placeholder="选择截止时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
      <el-button type="primary" icon="el-icon-search" @click="getCourseList()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table
      v-loading="listLoading"
      :data="list"
      element-loading-text="数据加载中"
      border
      fit
      highlight-current-row>

      <el-table-column
        label="序号"
        width="70"
        align="center">
        <template slot-scope="scope">
          {{ (current - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="title"  label="课程名称" width="250" align="center"/>

      <el-table-column label="课程状态" width="80" align="center">
        <template slot-scope="scope">
          {{ scope.row.status==='Normal'?'已发布':'未发布' }}
        </template>
      </el-table-column>

      <el-table-column prop="lessonNum" label="课时数" width="100" align="center"/>

      <el-table-column prop="gmtCreate" label="添加时间" width="180" align="center"/>

      <el-table-column prop="viewCount" label="浏览数量" width="100" align="center"/>

      <el-table-column label="操作" width="500" align="center"  fixed="right">
        <template slot-scope="scope">
          <router-link :to="'/course/info/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">修改课程基本信息</el-button>
          </router-link>
          <router-link :to="'/course/chapter/'+scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit">修改课程大纲</el-button>
          </router-link>
          <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除课程信息</el-button>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->
    <el-pagination
      :current-page="current"
      :page-size="limit"
      :total="total"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      @current-change="getCourseList"
    />

  </div>
</template>

<script>
  import course from '@/api/edu/course'
  export default {

    data() {
      return {
        listLoading: true,
        list:null,//查询之后接口返回集合
        current: 1,
        limit: 10,
        total: 0,//总记录数
        courseQuery:{} //条件封装对象
      }
    },
    created() {
      this.getCourseList()
    },

    methods: {
      ////current=1意为默认为1
      getCourseList(current=1) {
        this.current = current
        course.getCourseList(this.current,this.limit,this.courseQuery)
          .then(response =>{//请求成功
            this.listLoading =false
            //response接口返回的数据
            this.list = response.data.data
            this.total = response.data.total
          })
      },
      resetData() {//清空的方法
        //表单输入项数据清空
        this.courseQuery = {}
        //查询所有讲师数据
        this.getCourseList()
      },
      removeDataById(id) {
        this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          course.removeById(id)
            .then(response=>{
              this.$message({
                type: 'success',
                message: '删除成功!'
              });
              this.getCourseList()
            })
        })
      },
    }
  }
</script>

<style scoped>
</style>

